EP 1671786 B1 20130123 - BIODEGRADABLE LAYERED SHEET
Title (en)
BIODEGRADABLE LAYERED SHEET
Title (de)
BIOLOGISCH ABBAUBARE MEHRLAGIGE FOLIE
Title (fr)
FEUILLE STRATIFIEE BIODEGRADABLE
Publication
Application
Priority
- JP 2004014241 W 20040929
- JP 2003343489 A 20031001
- JP 2004283100 A 20040929
Abstract (en)
[origin: EP1671786A1] It is an object to provide a biodegradable laminated sheet which is high in heat resistance, impact resistance and strength when subjected to loads at high temperature, does not develop wrinkles called "bridges", which can be easily deep-drawn or formed into blister articles, which are typically complicated in shape. The biodegradable sheet is a laminated sheet comprising at least two layers. Each of the layers forming the laminated sheet is a resin composition comprising 75 to 25% by mass of a polylactic acid resin, and 25 to 75% by mass of a polyester resin having a glass transition temperature not exceeding 0 degrees C and a melting point higher than the glass transition temperature of the polylactic acid resin, and not exceeding the melting point of the polylactic acid resin, based on 100 mass percent of the total amount of the polylactic acid resin and the polyester resin. The D-lactic acid content of the polylactic acid resin contained in one layer, and the D-lactic acid content of the polylactic acid resin in the other layer are determined to satisfy a predetermined relationship. The laminated sheet is subjected to crystallization treatment.
IPC 8 full level
B32B 27/08 (2006.01); B32B 27/16 (2006.01); B32B 27/36 (2006.01); C08L 67/02 (2006.01); C08L 67/04 (2006.01)
CPC (source: EP KR US)
B32B 27/08 (2013.01 - EP KR US); B32B 27/16 (2013.01 - EP KR US); B32B 27/36 (2013.01 - EP KR US); C08L 67/02 (2013.01 - EP KR US); C08L 67/04 (2013.01 - EP KR US); B32B 2250/244 (2013.01 - EP KR US); B32B 2307/306 (2013.01 - EP KR US); B32B 2307/54 (2013.01 - EP KR US); B32B 2307/558 (2013.01 - EP KR US); B32B 2307/702 (2013.01 - EP KR US); B32B 2307/704 (2013.01 - EP KR US); B32B 2307/7163 (2013.01 - EP KR US); B32B 2439/62 (2013.01 - EP KR US); B32B 2439/70 (2013.01 - EP KR US); B32B 2439/80 (2013.01 - EP KR US); Y10T 428/24942 (2015.01 - EP US); Y10T 428/2495 (2015.01 - EP US); Y10T 428/24967 (2015.01 - EP US); Y10T 428/269 (2015.01 - EP US); Y10T 428/31786 (2015.04 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1671786 A1 20060621; EP 1671786 A4 20110413; EP 1671786 B1 20130123; JP 2005125765 A 20050519; JP 4417216 B2 20100217; KR 101118326 B1 20120309; KR 20060081713 A 20060713; TW 200517440 A 20050601; TW I304426 B 20081221; US 2006286373 A1 20061221; US 7235287 B2 20070626; WO 2005032818 A1 20050414
DOCDB simple family (application)
EP 04788307 A 20040929; JP 2004014241 W 20040929; JP 2004283100 A 20040929; KR 20067006336 A 20060331; TW 93129824 A 20041001; US 59526104 A 20040929